CN107417012A - A kind of precipitation treatment method of Treating Electroplate Wastewater Containing Nickel - Google Patents
A kind of precipitation treatment method of Treating Electroplate Wastewater Containing Nickel Download PDFInfo
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- CN107417012A CN107417012A CN201710782157.8A CN201710782157A CN107417012A CN 107417012 A CN107417012 A CN 107417012A CN 201710782157 A CN201710782157 A CN 201710782157A CN 107417012 A CN107417012 A CN 107417012A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B23/00—Obtaining nickel or cobalt
- C22B23/04—Obtaining nickel or cobalt by wet processes
- C22B23/0453—Treatment or purification of solutions, e.g. obtained by leaching
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/26—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
- C22B3/38—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds containing phosphorus
- C22B3/384—Pentavalent phosphorus oxyacids, esters thereof
- C22B3/3842—Phosphinic acid, e.g. H2P(O)(OH)
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/06—Electrolytic production, recovery or refining of metals by electrolysis of solutions or iron group metals, refractory metals or manganese
- C25C1/08—Electrolytic production, recovery or refining of metals by electrolysis of solutions or iron group metals, refractory metals or manganese of nickel or cobalt
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/26—Treatment of water, waste water, or sewage by extraction
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
A kind of precipitation treatment method of Treating Electroplate Wastewater Containing Nickel, comprises the following steps：Treating Electroplate Wastewater Containing Nickel is put into stirring pool, is stirred with electric blender, and adjusts the pH of waste water；Molysite is added into the stirring pool, then adjusts the pH of waste water again；Waste water in the stirring pool is heated, and stirs a period of time；Waste water is passed through in sedimentation basin again and precipitated, obtains precipitating sludge；The precipitating sludge is filtered, dried；Product after drying is dissolved in the dilute sulfuric acid, obtains primary solution；The primary solution is extracted, obtains extract；The extract is stripped, obtains strip liquor；The strip liquor is electrolysed, obtains metallic nickel.Present invention process flow is green, and energy consumption is small, and heavy metal recovery is also high, and overall production cost is low, it is easy to accomplish industrial-scale production.
Description
Technical field
The present invention relates to field of Environment Protection, specially a kind of precipitation treatment method of Treating Electroplate Wastewater Containing Nickel.
Background technology
With economic development and the raising of living standards of the people, demand and the day of electroplated product increase severely, and in electroplating wastewater
Containing polluters such as substantial amounts of heavy metals, if be not acted upon, any discharge, serious danger certainly will be produced to environment and the mankind
Evil, therefore, the processing for studying electroplating wastewater is a hot issue.
Plating is the beautician of metal surface, and various basic, ornamental and protection can be obtained on various basic materials
The good metal coating of property, its product are ubiquitous.Such as the hardware industry such as China's automobile, electrical equipment and architectural engineering and decoration row
The development of industry, every profession and trade progressively increase the demand of electroplating industry.Therefore, electroplate has very important ground in national economy
Position.
But electroplating wastewater complicated component, in addition to containing cyanide and acidic and alkaline waste water, the heavy metal toxicity contained by it is huge.
Toxic heavy metal can not be biodegradable, often participation food chain circulation, and finally in biology once discharge into environment
Cylinder accumulation, organism normal physiological metabolic activity is destroyed, human health is endangered, moreover, it is achieved that to valuable gold in electroplating wastewater
The recovery of category also has Important Economic value.
Therefore, it is significant to study electroplating waste water treatment technology.Develop electroplating waste water treatment technology, can not only save
About water resource, reclaim heavy metal, moreover it is possible to efficiently solve the harm of pollution and human body of the electroplating wastewater to water body, protecting ecology ring
Border and health.
The content of the invention
The shortcomings that for above-mentioned prior art, the present invention provide a kind of electroplating effluent treatment method green, cost is low.
The present invention solves above-mentioned technical problem and uses following technical scheme：A kind of precipitation process side of Treating Electroplate Wastewater Containing Nickel
Method, comprise the following steps：
(1) Treating Electroplate Wastewater Containing Nickel is put into stirring pool, be stirred with electric blender, and adjust the pH of waste water；
(2) molysite is added into the stirring pool, then adjusts the pH of waste water again；
(3) waste water in the stirring pool is heated, and stirs a period of time；
(4) waste water that step (3) obtains is passed through in sedimentation basin and precipitated, obtain precipitating sludge；
(5) precipitating sludge is filtered, dried；
(7) product after drying is dissolved in the dilute sulfuric acid, obtains primary solution；
(8) primary solution is extracted, obtains extract；
(9) extract is stripped, obtains strip liquor；
(10) strip liquor is electrolysed, obtains metallic nickel.
Preferably, the content of electroplating wastewater nickel described in step (1) is 300~400mg/L.
Preferably, the pH to 1~1.5 that waste water is adjusted in dilute sulfuric acid is added in step (1).
Preferably, molysite described in step (2) is ferrous sulfate, concentration is 3~7mL/L.
Preferably, the pH to 8~8.5 of waste water is adjusted in step (2) with potassium hydroxide.
Preferably, heating-up temperature is 80~90 DEG C in step (3), 30min is stirred.
Further, precipitated 1~2 hour in sedimentation basin in step (4).
As further preferred, press filtration is filtered into described in step (5), drying temperature is 60~80 DEG C.
Preferably, extractant is two (2,4,4- tri-methyl-amyl) phosphinic acids in step (8).
As further preferred, back washing agent is dilute sulfuric acid in step (9).
The present invention has the following advantages that compared with prior art：Present invention process is simple, and reaction condition easily reaches, reaction
Also it is easy to control, the advantages that subsequent treatment process is simple, and PH is easily controlled.By adding ferrite precipitating reagent into waste water, make to give up
Heavy metal in water generates ferrite precipitation not soluble in water, is removed so as to separate, and the major advantage of ferrite process is sulfuric acid Asia
The iron source of goods is wide, price is low, processing equipment is simple, water can reach qualified discharge, sludge after processing will not cause secondary pollution.Finally
Metal product impurity content is low, and purity is high；Present invention process flow is green, and energy consumption is small, and heavy metal recovery is also high, overall
Production cost is low, it is easy to accomplish industrial-scale production.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below
Specific embodiment is closed, the present invention is expanded on further.It should be appreciated that specific embodiment described herein is only explaining this hair
It is bright, it is not intended to limit the present invention.
Embodiment 1：
Treating Electroplate Wastewater Containing Nickel is put into stirring pool, the content of electroplating wastewater nickel is 300mg/L, is carried out with electric blender
Stirring, and add dilute sulfuric acid regulation waste water pH=1, into the stirring pool add molysite ferrous sulfate, ferrous sulfate it is dense
Spend for 3mL/L, then add the pH=8 of potassium hydroxide regulation waste water, waste water in the stirring pool is heated, heating temperature
Spend for 80 DEG C, and stir 30min, then waste water is passed through in sedimentation basin again and precipitated, precipitate 1 hour, obtain in sedimentation basin
To precipitating sludge；The precipitating sludge is subjected to filter-press type filtering, then dried, drying temperature is 60 DEG C；By the production after drying
Thing is dissolved in the dilute sulfuric acid, obtains primary solution；The primary solution is extracted, extractant is two (2,4,4- front threes
Base amyl group) phosphinic acids, obtain extract；The extract is stripped, back washing agent is dilute sulfuric acid, obtains strip liquor；By institute
State strip liquor to be electrolysed, obtain metallic nickel.
Embodiment 2：
Treating Electroplate Wastewater Containing Nickel is put into stirring pool, the content of electroplating wastewater nickel is 350mg/L, is carried out with electric blender
Stirring, and the pH=1.2 of dilute sulfuric acid regulation waste water is added, molysite ferrous sulfate is added into the stirring pool, ferrous sulfate
Concentration is 5mL/L, then adds the pH=8.3 of potassium hydroxide regulation waste water, waste water in the stirring pool is heated, added
Hot temperature is 85 DEG C, and stirs 30min, and then waste water is passed through in sedimentation basin again and precipitated, and it is small that 1.5 are precipitated in sedimentation basin
When, obtain precipitating sludge；The precipitating sludge is subjected to filter-press type filtering, then dried, drying temperature is 70 DEG C；After drying
Product be dissolved in the dilute sulfuric acid, obtain primary solution；The primary solution is extracted, extractant is two (2,4,4-
Tri-methyl-amyl) phosphinic acids, obtain extract；The extract is stripped, back washing agent is dilute sulfuric acid, obtains strip liquor；
The strip liquor is electrolysed, obtains metallic nickel.
Embodiment 3：
Treating Electroplate Wastewater Containing Nickel is put into stirring pool, the content of electroplating wastewater nickel is 400mg/L, is carried out with electric blender
Stirring, and the pH=1.5 of dilute sulfuric acid regulation waste water is added, molysite ferrous sulfate is added into the stirring pool, ferrous sulfate
Concentration is 7mL/L, then adds the pH=8.5 of potassium hydroxide regulation waste water, waste water in the stirring pool is heated, added
Hot temperature is 90 DEG C, and stirs 30min, and then waste water is passed through in sedimentation basin again and precipitated, and it is small that 2 are precipitated in sedimentation basin
When, obtain precipitating sludge；The precipitating sludge is subjected to filter-press type filtering, then dried, drying temperature is 80 DEG C；After drying
Product be dissolved in the dilute sulfuric acid, obtain primary solution；The primary solution is extracted, extractant is two (2,4,4-
Tri-methyl-amyl) phosphinic acids, obtain extract；The extract is stripped, back washing agent is dilute sulfuric acid, obtains strip liquor；
The strip liquor is electrolysed, obtains metallic nickel.
Embodiment 4：
Treating Electroplate Wastewater Containing Nickel is put into stirring pool, the content of electroplating wastewater nickel is 400mg/L, is carried out with electric blender
Stirring, and the pH=1.4 of dilute sulfuric acid regulation waste water is added, molysite ferrous sulfate is added into the stirring pool, ferrous sulfate
Concentration is 6mL/L, then adds the pH=8.5 of potassium hydroxide regulation waste water, waste water in the stirring pool is heated, added
Hot temperature is 80 DEG C, and stirs 30min, and then waste water is passed through in sedimentation basin again and precipitated, and it is small that 1.5 are precipitated in sedimentation basin
When, obtain precipitating sludge；The precipitating sludge is subjected to filter-press type filtering, then dried, drying temperature is 80 DEG C；After drying
Product be dissolved in the dilute sulfuric acid, obtain primary solution；The primary solution is extracted, extractant is two (2,4,4-
Tri-methyl-amyl) phosphinic acids, obtain extract；The extract is stripped, back washing agent is dilute sulfuric acid, obtains strip liquor；
The strip liquor is electrolysed, obtains metallic nickel.
Embodiment 5：
Treating Electroplate Wastewater Containing Nickel is put into stirring pool, the content of electroplating wastewater nickel is 350mg/L, is carried out with electric blender
Stirring, and the pH=1.2 of dilute sulfuric acid regulation waste water is added, molysite ferrous sulfate is added into the stirring pool, ferrous sulfate
Concentration is 4mL/L, then adds the pH=8.4 of potassium hydroxide regulation waste water, waste water in the stirring pool is heated, added
Hot temperature is 85 DEG C, and stirs 30min, and then waste water is passed through in sedimentation basin again and precipitated, and it is small that 2 are precipitated in sedimentation basin
When, obtain precipitating sludge；The precipitating sludge is subjected to filter-press type filtering, then dried, drying temperature is 80 DEG C；After drying
Product be dissolved in the dilute sulfuric acid, obtain primary solution；The primary solution is extracted, extractant is two (2,4,4-
Tri-methyl-amyl) phosphinic acids, obtain extract；The extract is stripped, back washing agent is dilute sulfuric acid, obtains strip liquor；
The strip liquor is electrolysed, obtains metallic nickel.
Present invention process is simple, and reaction condition easily reaches, and reaction is also easy to control, and subsequent treatment process is simple；Technique stream
Journey is green, and energy consumption is small, and heavy metal recovery is also high, and overall production cost is low, it is easy to accomplish industrial-scale production.
The general principle and principal character and advantages of the present invention of the present invention, the technology of the industry has been shown and described above
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention, the claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (10)
1. a kind of precipitation treatment method of Treating Electroplate Wastewater Containing Nickel, comprises the following steps：
(1) Treating Electroplate Wastewater Containing Nickel is put into stirring pool, be stirred with electric blender, and adjust the pH of waste water；
(2) molysite is added into the stirring pool, then adjusts the pH of waste water again；
(3) waste water in the stirring pool is heated, and stirs a period of time；
(4) waste water that step (3) obtains is passed through in sedimentation basin and precipitated, obtain precipitating sludge；
(5) precipitating sludge is filtered, dried；
(7) product after drying is dissolved in the dilute sulfuric acid, obtains primary solution；
(8) primary solution is extracted, obtains extract；
(9) extract is stripped, obtains strip liquor；
(10) strip liquor is electrolysed, obtains metallic nickel.
2. according to the method for claim 1, the content of electroplating wastewater nickel described in step (1) is 300~400mg/L.
3. method according to claim 1 or 2, the middle pH to 1~1.5 for adding dilute sulfuric acid and waste water being adjusted of step (1).
4. according to the method for claim 1, molysite described in step (2) is ferrous sulfate, and concentration is 3~7mL/L.
5. the method according to claim 1 or 4, the pH to 8~8.5 of waste water is adjusted in step (2) with potassium hydroxide.
6. according to the method for claim 1, heating-up temperature is 80~90 DEG C in step (3), 30min is stirred.
7. according to the method for claim 1, precipitated 1~2 hour in sedimentation basin in step (4).
8. according to the method for claim 1, being filtered into press filtration described in step (5), drying temperature is 60~80 DEG C.
9. according to the method for claim 1, extractant is two (2,4,4- tri-methyl-amyl) phosphinic acids in step (8).
10. according to the method for claim 1, back washing agent is dilute sulfuric acid in step (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710782157.8A CN107417012A (en) | 2017-09-02 | 2017-09-02 | A kind of precipitation treatment method of Treating Electroplate Wastewater Containing Nickel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710782157.8A CN107417012A (en) | 2017-09-02 | 2017-09-02 | A kind of precipitation treatment method of Treating Electroplate Wastewater Containing Nickel |
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| CN201710782157.8A Withdrawn CN107417012A (en) | 2017-09-02 | 2017-09-02 | A kind of precipitation treatment method of Treating Electroplate Wastewater Containing Nickel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109897973A (en) * | 2019-04-03 | 2019-06-18 | 东北师范大学 | A method of utilizing nickel in molysite deposition recycling nickel-containing waste water |
| CN114855219A (en) * | 2022-06-14 | 2022-08-05 | 江苏八菱环保科技有限公司 | Nickel sulfate separation, precipitation and electrolysis nickel recovery device |
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| US4752400A (en) * | 1986-06-25 | 1988-06-21 | Viking Industries | Separation of metallic and cyanide ions from electroplating solutions |
| CN102212698A (en) * | 2011-05-19 | 2011-10-12 | 江门市芳源环境科技开发有限公司 | Method for recovering nickel sulfate through comprehensive treatment of nickel-containing waste |
| CN102719657A (en) * | 2011-11-02 | 2012-10-10 | 江苏技术师范学院 | Method for recycling heavy metal in electroplating sludge |
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2017
- 2017-09-02 CN CN201710782157.8A patent/CN107417012A/en not_active Withdrawn
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| US4752400A (en) * | 1986-06-25 | 1988-06-21 | Viking Industries | Separation of metallic and cyanide ions from electroplating solutions |
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| CN102719657A (en) * | 2011-11-02 | 2012-10-10 | 江苏技术师范学院 | Method for recycling heavy metal in electroplating sludge |
| CN104451159A (en) * | 2014-12-02 | 2015-03-25 | 赣州中联环保科技开发有限公司 | Process for recycling metals from electroplating wastewater |
| CN106801148A (en) * | 2015-11-25 | 2017-06-06 | 常德力元新材料有限责任公司 | A kind of method that utilization Ni-containing Plating Wastewater prepares metal nickel block |
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| Title |
|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109897973A (en) * | 2019-04-03 | 2019-06-18 | 东北师范大学 | A method of utilizing nickel in molysite deposition recycling nickel-containing waste water |
| CN114855219A (en) * | 2022-06-14 | 2022-08-05 | 江苏八菱环保科技有限公司 | Nickel sulfate separation, precipitation and electrolysis nickel recovery device |
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Application publication date: 20171201 |